Double-acting wet-air pump.



E. J OSSB.

DOUBLE ACTING WET AIB. PUMP.

APPLOATION FILED JULY 23, 1907.

Patented sept. 15, 190s.

Wi'nesse ritiri. roissinpo'r Bannin'pesa'ueu'r,

.liTo all 'whom it 'may concern:`

Be itkno'wn that I, EMIL Josse, a subject "of the Emperorof Germany, andresident of Berlin,A Germany, havek invented a certain f acting wet airpuiii V"whichworks vwith-a high v 'new and useful Improvement inDouble-.Actg Wet-Air Pumps, of which the following a specification.

K The present invention relates to a double number of revolutions and' ahigh vacuum. VInorderl to obtaina high number of revolutions it isnecessary to introduce some air into the 'side ofv the cylinder at whichthe delivery of water takes place. -The 'air present can be arranged tobe always covered by water which insures their tightness, Pumps alreadyin use have been able to obtain a high vacuum and a fairly high numberof revolutions yonly with two-stage compression so that as a rule onlysingle acting pumps could be employed. y

Pumps according to the present invention have a high vacuum and a highnumber of revolutions and are double-acting7 while the pumps areconsiderably smaller and cheaper than those heretofore used..

The essence of the present invention consists in this that in theupright pump cylinder in the upper half air 1s delivered for the greaterpart and Water for the smaller part7 while in vthe lower half water isdelivered for the greater part and air for the smaller part.

In the upper half the air is admitted in the known manner throughsuction Valves. The Water required for the upper half passes when thepiston is at the lowest dead center through a passage controlled by thepiston from the lower side ofthe piston to the upper side in order tokeep the' upper side of the piston Wet, to fill up the space on the uper side of the piston with 'waterwhich Woul other# Wise prevent thevacuum from being formed and to keep the pressure valves' of the upperside of the piston under Watt-r for the purpose of obtaining perfectclosure. This filling of the lower side of the iston with water and withsoin'e air takes p ace atthe upper dead position of the piston throughslots formed in I vSpeciicvzationAol' Letters @ata-ant. i i i'Application filed July 23, 1907. Serial No. Bei-17u.

newness. sept'. la. ieee,

the Sil-a1 'of 'are tnaeiyae comme ing first o to its Weight into thecylinder vand then some air being sucked with it through the slots lnthe lower side of the cylinder therefore only pressure valves areprovided While the upper side ofthe cylinder is provided with pressurevalves and. suctionv va ves. 4 'The pump isillustrated in Figs. 1 to flin the accompanying drawing.

a represents the upright pump cylinder, la'

the piston. The ump'isconnected with a surface condenser y theconnection lthrough which air. and condensed water-enter from' thecondenser. The connection l is so arranged that water ilows to it fromthe condenser. Through the connecting pipe n the condensate and a partof the air pass into the annular chamber m and thence into the lowerpart ofthe cylinder. The passage into the cylinder takes place throughslots g which are so arranged in the wall of the cylinder that thepiston opens the saine .fully in its highest dead position (see Fig. 2).'0n its descent the piston closes the slots and the water and airintroduced are com ressed in known manner and forced outward y throughp' the pressure valve d, the pipe o and the connection p. i 1

By the delivery of a mixture lor' a large quantity of water and a smallquantity of air the operation on the lower side takes place silentlyeven at a large number of revolutions.

For Idie upper side of the cylinder practically only airis required,this airbeing sucked through the connection l andsuction valves c intothe cylinder and forced Iout ofthe.

cylinder through the pressure valves d and connection p. For` thepurpose of better packing and lubricating the saine before the pistonreaches its lowest dead point the slots h1 in the wall of the cylinderare un i covered. The slot h. is connected by a passage i of suitabledimensionsand slot h with the lower side of the cylinder so that aquantity of Water corresponding to the' cross-section of the passagepasses from the lowerY side of the iston which is in compression throughh, c and h1 to the u per side of the cylinder. which sometimes attenddry compression are avoided and besides `the space which would prevent avacuum from being formed vis filled with water and the'upper pressurevalves are kept under water.

In this way higi temperatures m lsurrouiiding claim andfdesireto secureby of the United States isz- A f The improved high 'speed uprightdouble'acting v,wet air pump' comprising in combina- Y assage 'n Fig. deadposition andin Fig.

position. Fig; 3 'is' a sectionv through the yalv'eiclieston theniipperside of the piston, hows thepijessure lvalves on the lower f side ofthecylinder together with the oyerrfio-W passage 7;.

Having deSCiibd-'my'mvention what i tion withthe cylinder aj and thepiston b, a

rom the condenser-to said cylinder, a casing communicate with the.cylinder through slotsfg Vl ie.walls..of said cylinders, ,said

slots being -located ata distance vfrom' the topi? end oithecylinder`just greater than the distance of the lower end of the piston fromsaidftop' end,' av connection n between said a connection be- 1 thepiston is shown iii its lowest 2 in the upper dea d openingsLetters,Patent` lower opening Z by which air land'water are led saidcylinder and adapted to r."

' two subscribing witnesses.

tweentfsaid' passage and vthe lupper part of said connection "beingpartisaid cylinder,

toned' iii-to' two branches, inlet yand outlet 'valves c' and d,disposed in the respective nections o, from said'outlet ipe to the upperbranch conv and lower ends of the cylin er, and pressure.

-valvesd disposed in the branch connectionro.,

as-shown and described.

In telstimonywhereof Iv have signed my naine to this specification -inthe presence of 4o lEMIL Jossn I Witnesses;'

e A WOL'DEMARHAUPT, 'HENRY HAsrER. l

